153 research outputs found
Proceedings - 13th IEEE International Symposium on Web Systems Evolution, WSE 2011: Foreword
No full textQuality and Potential for Adoption of Web Usability Evaluation Methods: An Empirical Study on MILE+
No full textWeb usability evaluation methods are conceptual tools which should enable web designers, web
engineers and usability engineers to detect and possibly anticipate usability problems of a web
application, and eventually to provide requirements for improving the quality of the user experience.
As the number of techniques and methods available grows, practitioners need clear criteria to choose
which methods best fit their project needs, resources and organizational goals. Therefore, it becomes
more and more important to foster research towards evaluating the quality of the usability evaluation
methods, especially in view of their potential adoption among practitioners. Besides focussing on
known attributes of intrinsic quality of the method (such as coverage, reliability and validity), this
paper also explores “perceived” quality attributes related to the potential adoption of the method
among practitioners, namely in terms of learnability, perceived difficulty, and cost-effectiveness. We
report two empirical studies which have been carried out to measure these quality attributes on a
state-of-the-art inspection method for web usability, called MiLE+. The result of this work can be
useful to scholars because it provides validation examples and a set of quality attributes to apply to
other usability evaluation methods; it also benefits practitioners because it offers a clear guidance
about what requirements they should look for when selecting a usability evaluation method for their
own project needs
Quality and Potential for Adoption of Usability Evaluation Methods: an Empirical Study on MILE
No full textWeb usability evaluation methods are conceptual tools which should enable web designers, web engineers and usability engineers to detect and possibly anticipate usability problems of a web application, and eventually to provide requirements for improving the quality of the user experience. As the number of techniques and methods available grows, practitioners need clear criteria to choose which methods best fit their project needs, resources and organizational goals. Therefore, it becomes more and more important to foster research towards evaluating the quality of the usability evaluation methods, especially in view of their potential adoption among practitioners. Besides focussing on known attributes of intrinsic quality of the method (such as coverage, reliability and validity), this paper also explores "perceived" quality attributes related to the potential adoption of the method among practitioners, namely in terms of learnability, perceived difficulty, and cost-effectiveness. We report two empirical studies which have been carried out to measure these quality attributes on a state-of-the-art inspection method for web usability, called MiLE+. The result of this work can be useful to scholars because it provides validation examples and a set of quality attributes to apply to other usability evaluation methods; it also benefits practitioners because it offers a clear guidance about what requirements they should look for when selecting a usability evaluation method for their own project needs
Quality of Web Usability Evaluation Methods: An Empirical Study on MiLE+
No full textWhat are the quality factors that define a “good” usability evaluation method and contribute to its acceptability and adoption in a real business context? How can we measure such factors? This paper investigates these issues and proposes to decompose the broad, general concept of “methodological quality” into more measurable, lower level attributes such as performance, efficiency, cost effectiveness, andlearnability. We exemplify how to measure such attributes, reporting an empirical evaluation study of a usability inspection method for web applications called MiLE+
Two-Dimensional Sequential Array Architectures: Design for Testability and Reconfiguration Issues
No full textNew Design for Testability techniques aimed both at overcoming the problem of testing array architectures composed of sequential cells and at guaranteeing fault tolerance through reconfiguration are proposed
Value-Driven Design for “Infosuasive” Web Applications
No full textAn infosuasive web application is mainly intended to be at the
same time informative and persuasive, i.e., it aims at supporting
knowledge needs and it has also the (declared or not declared)
goal of influencing user’s opinions, attitudes and behaviors. Most
web applications, in fact, are infosuasive (except those whose aim
is mainly operational). In this paper, we investigate the complex
set of elements that informs the very early design of infosuasive
web applications. We propose a conceptual framework aimed at
supporting the actors involved in this process to integrate their
different viewpoints, to organize the variety of issues that need to
be analyzed, to find a direction in the numerous design options,
and to represent the results of this activity in an effective way.
Our approach is value-driven since it is centered around the
concept of communication value, regarded as a vehicle to fulfill
communication goals on specific communication targets. We
place the analysis of these aspects in the wider context of web
requirements analysis, highlighting their relationships with
business values analysis and user needs analysis. We pinpoint
how values and communication goals impact on various design
dimensions of infosuasive web application - contents, information
architecture, interaction, operations, and lay-out. Our approach is
multidisciplinary, and was inspired to goal-based and value-based
requirements engineering (often used in web engineering), to
brand design (often used in marketing), and to value-centered
design “frameworks” (as proposed by the HCI community). A
case study exemplifies our methodological proposal, discussing a
large project in which we are currently involve
Progettare Siti Web e Applicazioni Mobili
No full textSintesi del contenuto.
Progettare applicazioni interattive e multimediali: per il web e non solo; anche per i nuovi strumenti mobili (il “pocket pc”, il telefono di terza generazione, ipod, altri di-spositivi). I principi generali della progettazione vengono tradotti in un metodo sem-plice e chiaro. Migliorare la qualità delle applicazioni e la loro usabilità: raggiungere gli obiettivi prefissati e tenere ben presenti gli utenti.
Un’introduzione generale pone la progettazione nel contesto globale dello sviluppo di applicazioni software; si descrivono i metodi per ottenere validi requisiti; si introduce quindi il primo passo di progettazione (la progettazione concettuale), basato sulla in-dividuazione dei contenuti e sulla loro organizzazione in generale (“information ar-chitecture”); si introduce il metodo per dettagliare la progettazione concettuale, me-diante la progettazione logica che tenga conto delle specificità del “canale” (dispositi-vo) utilizzato; si spiega come tradurre il tutto in “pagine” e link tra le stesse; si intro-ducono quindi brevemente le principali tecniche implementative (in un capitolo che può essere omesso dai progettisti con cultura non tecnologica), e un modo sistematico per passare dal modello concettuale e logico al software.
Numerosi esempi e l’impostazione generale rendono il libro adatto a tutti i progettisti: novizi o esperti; privi di specifica cultura tecnologica, o già avvezzi alle tecnologie informatiche
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